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(No Model.)

LE GRAND M. ANWAY.

AUTOMATIC MECHANICAL BOILER CLEANER.

No. 873,712. Patented 0V. 22, 1887.

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LE GRAND M. ANVVAY,

OF JEXV YORK, N. Y.

AUTOMATIC MECHANICAL BOILER CLEANER.

SPECIFICATION formingpart of Letters Patent N'o. 373,712, dated November 22, 1887.

Application tiled August 10, 18x37.

"0 aZZ whom it may concern:

Be it known that 1, Ln GRAND M. ANWAY, of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Automatic Mechanical Boiler-Cleaners; and I do hereby declare that the following is a full, clear, and exact description of the same.

Myinvention is an improved automatic mechanical boiler-cleaner of that class in which the impurities are removed from the surface by the action of the current of water within the boiler acting against a collector,which receives the impurities and discharges them through a suitable pipe into a drum in which the sediment is collected.

My invention consists of an improved form of the collecting-diaphragm and in certain details of construction, all as hereinafter explained. I

In the drawings, Figure 1 represents a boilor, partly in central longitudinal section and partly in side elevation, showing the collecting-diaphragm in place in like section. Figs. 2 and Srepresent the collecting-diaphragm detached, and Fig. 4 shows a modified arrangement of the settling-drum.

In the drawings, A indicates the boiler, here used to represent any kind or form of boiler in which the invention may be used. Above the fines a in the upper part of the boiler is a partial head or collectingdiaphragm, B. It extends across the boiler from side to side, and vertically above and below the limit, 1 2, of high and low water in the boiler. In form the collecting-diaphragm is curred in two directions-that is to say, on horizontal and vertical planes, as represented in Figs. 2and On the lower edge, which is practically horizontal and straight, is a plate, I), having on its edge an upturned flange, c; or this may be turned slightly in to overhang the plate. This flange and the plate extend also from side to side. In the center of the diaphragm is an opening made in elongated ver tical form, )referably oval in lcngtln to correspond with the upper and lower levels of the water. This opening is the month of a pipe, D, which extends to the rear and is con nected with the pipe d,leading to the settling drum. As the opening in the diaphragm and mouth of the pipe D are, as explained, oval stances may be drawn off.

Serial No. 246,565. (No model.)

or vertically elongated, the pipe D must he conical or tapering to the rear. I have found that if it be made with a true taper-that is to say, with an upper and under surface both inclined, or with the upper surface inclined from frontto rear downward-the scum will strike against this upper surface when pass ing through the pipe D, and will thus be obstructed, while the clear water underneath.

construction in two parts, and these are unitedon a central vertical line. In this way the parts can be introduced separately through 'the man-hole and united and fixed in place within the boiler by links 6, or in any convenient way. From the end of the tapering pipe D the piped extends horizontally to the vertical pipe f, which communicates with the lower part of the settling-drum. The settlingdrum is vertical in Fig. 1, and has a blow-off or cleaning coelgg, and an upper cock, 7:, from which the oil, magnesia, or other light sub- From the upper part of the settlingdrum E is the return-pipe k, which is shown as carried under the boiler and outside thereof; but it may be passed through the boiler. The position may be varied, however, according to the nature or form of the boiler. The front end is provided with a cock, 1, and is turned up and enters the boiler in position to discharge on the fire-plates at the front and over the grate F.

The collecting-diaphragm may be provided with one or with several openings and tapering pipes, as shown in dotted lines in Figs. 2 and 3. In Fig. 2 one is thus shown on each side, and curved tapering pipes on the same principle as the central pipe, D, are united to the pipe d by suitable unions to give greater collecting capacity.

In Fig. 4 is shown a. horizontal settling-tank with inlet and outlet pipes as represented. This may be used instead of the vertical form shown in Fig. 1.

In operation the surface-current of the boiler is from left to right in Fig. 1. The collector is near the right-hand end or rear of the boiler, and faces to the left or front. Its vertical extent and the vertical extent of the opening or openings adapt it to work with high or lowlevel of water. The current impinges against the curved face of the collecting-diaphragm, and the scum carried on the surface is turned toward the center. The flange is below the lower water-line, so that the current always passes over it and strikes the face of the collector; but the flange arrests any reflex flow from the face of the collecting-diaphragm, and thus prevents any under-currents from forcing and carrying the scum under the collector. The scum caught is thus drawn and forcedinto the tapering pipe or pipes D, and passes to the settling-drum described. The flange may be formed with a notched or serrated upper edge to allow the direct currentto pass more readily over it.

A valve, m, is placed at thejunction of the pipe d withits vertical pipe. In order to clean the settling-drum, this is closed, and also that at the front end of the pipe. Then by open ing the stop-cock at the lower end of the collecting-drum the steam contained in the drum is allowed to blow off, and then the current may be passed through to the drum in either direction by opening either the cock m or Z. The return-pipe isjoined to the drum a little below the upper end, so as not to interfere with the oil and other substances on the surface of the water in the drum. The arrangement is the same in the horizontal drum, the cock 0 being the draw-off cock for oil, 850., and for the return-pipe. The circulation between the boiler and mud-drum E is kept up by the difference in temperature in the contents of the two chambers, the water as it is heated constantly rising to the surface within the boiler and passing off through the pipe d, aided by the pressure of the steam, and its place being taken by water from the chamber E entering atthe bottom of the boiler.

By discharging the return-water from the drum on the fire-plates they are prevented from undue heat, and are thus saved from more rapid destruction.

My invention is especially well adapted to locomotive-engines, as the action of the collecting-diaphragm is not affected by the movement of the water from side to side in passing aroundcurves; but it is not at all limited to these engines, but is valuable for any. The

return-pipe is smaller in diameter than the inlet-pipe, and by reason of this the circulation is checked at the return-pipe in the settlingdrum, thus allowing the sediment to settle.

I claim- 1. In aboiler,and in combinationtherewith,

the collectingdiaphragm '13, arranged verticall y and having the horizontal plate 2) upon its lower edge, the said horizontal portion being formed with an upturned flange, 0, along its front edge, the diaphragm B having an opening, a settling-drum, and the pipe leading from the collector to the drum. 2. In a boiler, and in combination, a collecting-diaphragm curved on horizontal and vertical planes, with a plate and upturned flange, an opening in the collector,and a pipeleading to a collecting-drum, substantially as described.

3. In aboiler, and in combination, a collecting-diaphragm having a plate and upturned flange, and formed with vertically-elongated openings, a tapering pipe joined to said openings, horizontal on its upper surface and inclined to the rear on its lower surface, a collecting-drum, and a pipe from the said tapering pipe to the drum,substantiallyasdescribed.

4:. In a boiler, and in combination, acollecting-diaphram curved on horizontal and vertical planes, aplate with upturned flange on its lower edge, a tapering pipe havinga vertical- ]y-elongated mouth, a settling-drum, and connecting and return pipes, substantially as described.

5. In a boiler, and in combination, the diaphragm B, curved in horizontal and vertical planes, and having a horizontal plate, b, said plate being provided with an upturned serrated flange along its front edge, a settlingdrum, and suitable connections from thecollector to the drum, substantially as described.- 

